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Finding the Fourth Proportional to 500,109.52, 749,645.88 and 312,690.64

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Solution

The fourth proportional to 500,109.52, 749,645.88 and 312,690.64 is: 468,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,109.52 : 749,645.88 = 312,690.64 : x
  2. Step 2: Convert to fraction form
    500,109.52/749,645.88 = 312,690.64/x
  3. Step 3: Cross multiply
    500,109.52x = 749,645.88 × 312,690.64
  4. Step 4: Simplify right side
    500,109.52x = 234,407,249,990.56
  5. Step 5: Solve for x
    x = 234,407,249,990.56/500,109.52
  6. Step 6: Final answer
    x = 468,711.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.